On Wed, 21 May 2014, Sven Schreiber wrote: > Am 21.05.2014 16:35, schrieb Ignacio Diaz-Emparanza: >> On 21/05/14 16:15, Riccardo (Jack) Lucchetti wrote: >>> On Wed, 21 May 2014, Sven Schreiber wrote: >>> >>>> Agreed (well, maybe deprecated and undocumented would be enough...); but >>>> there should still be a script way of creating seasonal/periodic >>>> dummies, and currently there is no alternative, or is there? >>> >>> <hansl> >>> tmp = time % $pd >>> list DUMS = dummify(tmp) >>> </hansl> >> >> I prefer that the number of each dummy corresponds with the observation: >> >> tmp = (time-1)%$pd + 1 >> list DUMS = dummify(tmp) >> > > Aren't you assuming that the workfile/sample actually starts with the > "right" obs here? > > Anyway, thanks for all your suggestions, but what I really meant was a > function (or command) that mirrors the menu entry like 'genr dummy' > does, not some clever way to code it... At present we have 7 "specials" with the form "genr <name>", for <name> = dummy, timedum, unitdum, time, index, unit, weekday. I haven't checked rigorously but I don't think "genr weekday" is documented (though there is a documented weekday() function). The "genr unit" special is shadowed by the accessor $unit. We could do the same for "index" if that were thought worthwhile.

As for the ones that add several variables, I don't think a $-accessor would work well. We _could_ have (e.g.) an accessor $dummy that adds a bunch of series and returns a list but that would look a bit weird if you didn't need to assign the list, having "$dummy" by itself on a line of hansl. Maybe a function named "dummies" (that returns a list) with a parameter to handle the panel cases (timedum, unitdum).